An obese woman who killed her boyfriend by sitting on him will not serve any time behind bars.Mia Landingham pleaded guilty to involuntary manslaughter on Wednesday and was sentenced to three years probation and 100 hours of community service, according toCBS affiliate WOIO. Landingham, who was believed to weigh over 300 pounds at the time of the Aug. 2009 incident, sat on Mikal Middleton-Bey as he was face first on the couch. According to her lawyer, there was a history of domestic abuse between Landingham and her boyfriend,FOX Newsreports. Investigators say the victim was 5′10″ tall and weighed 126 pounds. Landingham is 5′9″ tall. A police scale that went up to 350 pounds wasn’t enough to accurately weigh the Cleveland woman, according to the affiliate.Story by CBSNEWS